[next(Xca,Xaz),next(Xca,Xnev),next(Xca,Xoreg)
,next(Xaz,Xca),next(Xaz,Xnev),next(Xaz,Xut),next(Xaz,Xnm)
,next(Xnev,Xca),next(Xnev,Xaz),next(Xnev,Xut),next(Xnev,Xida),next(Xnev,Xoreg)
,next(Xoreg,Xca),next(Xoreg,Xnev),next(Xoreg,Xida),next(Xoreg,Xwash)
,next(Xwash,Xoreg),next(Xwash,Xida)
,next(Xida,Xwash),next(Xida,Xoreg),next(Xida,Xnev),next(Xida,Xut),next(Xida,Xwyo),next(Xida,Xmont)
,next(Xut,Xida),next(Xut,Xnev),next(Xut,Xaz),next(Xut,Xcolo),next(Xut,Xwyo)
,next(Xmont,Xida),next(Xmont,Xwyo),next(Xmont,Xsdak),next(Xmont,Xndak)
,next(Xwyo,Xmont),next(Xwyo,Xida),next(Xwyo,Xut),next(Xwyo,Xcolo),next(Xwyo,Xneb),next(Xwyo,Xsdak)
,next(Xcolo,Xwyo),next(Xcolo,Xut),next(Xcolo,Xnm),next(Xcolo,Xokla),next(Xcolo,Xkans),next(Xcolo,Xneb)
,next(Xnm,Xcolo),next(Xnm,Xaz),next(Xnm,Xtex),next(Xnm,Xokla)
,next(Xtex,Xnm),next(Xtex,Xla),next(Xtex,Xark),next(Xtex,Xokla)
,next(Xokla,Xtex),next(Xokla,Xark),next(Xokla,Xmo),next(Xokla,Xkans),next(Xokla,Xcolo),next(Xokla,Xnm)
,next(Xkans,Xokla),next(Xkans,Xmo),next(Xkans,Xneb),next(Xkans,Xcolo)
,next(Xneb,Xkans),next(Xneb,Xmo),next(Xneb,Xio),next(Xneb,Xsdak),next(Xneb,Xwyo),next(Xneb,Xcolo)
,next(Xsdak,Xneb),next(Xsdak,Xio),next(Xsdak,Xminn),next(Xsdak,Xndak),next(Xsdak,Xmont),next(Xsdak,Xwyo)
,next(Xndak,Xsdak),next(Xndak,Xminn),next(Xndak,Xmont)
,next(Xminn,Xndak),next(Xminn,Xsdak),next(Xminn,Xio),next(Xminn,Xwisc)
,next(Xio,Xminn),next(Xio,Xsdak),next(Xio,Xneb),next(Xio,Xmo),next(Xio,Xill),next(Xio,Xwisc)
,next(Xmo,Xio),next(Xmo,Xneb),next(Xmo,Xkans),next(Xmo,Xokla),next(Xmo,Xark),next(Xmo,Xtenn),next(Xmo,Xkent),next(Xmo,Xill)
,next(Xark,Xmo),next(Xark,Xokla),next(Xark,Xtex),next(Xark,Xla),next(Xark,Xmiss),next(Xark,Xtenn)
,next(Xla,Xark),next(Xla,Xtex),next(Xla,Xmiss)
,next(Xmiss,Xark),next(Xmiss,Xla),next(Xmiss,Xala),next(Xmiss,Xtenn)
,next(Xala,Xmiss),next(Xala,Xfla),next(Xala,Xga),next(Xala,Xtenn)
,next(Xfla,Xala),next(Xfla,Xga)
,next(Xga,Xfla),next(Xga,Xscar),next(Xga,Xncar),next(Xga,Xtenn),next(Xga,Xala)
,next(Xscar,Xga),next(Xscar,Xncar)
,next(Xncar,Xscar),next(Xncar,Xva),next(Xncar,Xtenn)
,next(Xtenn,Xncar),next(Xtenn,Xva),next(Xtenn,Xkent),next(Xtenn,Xmo),next(Xtenn,Xark),next(Xtenn,Xmiss),next(Xtenn,Xala),next(Xtenn,Xga)
,next(Xva,Xtenn),next(Xva,Xncar),next(Xva,Xmd),next(Xva,Xdc),next(Xva,Xwva),next(Xva,Xkent)
,next(Xdc,Xva),next(Xdc,Xmd)
,next(Xkent,Xva),next(Xkent,Xwva),next(Xkent,Xohio),next(Xkent,Xind),next(Xkent,Xill),next(Xkent,Xmo),next(Xkent,Xtenn)
,next(Xill,Xkent),next(Xill,Xind),next(Xill,Xwisc),next(Xill,Xio),next(Xill,Xmo)
,next(Xwisc,Xill),next(Xwisc,Xmich),next(Xwisc,Xminn),next(Xwisc,Xio)
,next(Xmich,Xwisc),next(Xmich,Xind),next(Xmich,Xohio)
,next(Xind,Xmich),next(Xind,Xill),next(Xind,Xkent),next(Xind,Xohio)
,next(Xohio,Xind),next(Xohio,Xkent),next(Xohio,Xwva),next(Xohio,Xpenn),next(Xohio,Xmich)
,next(Xwva,Xohio),next(Xwva,Xkent),next(Xwva,Xva),next(Xwva,Xmd),next(Xwva,Xpenn)
,next(Xmd,Xwva),next(Xmd,Xva),next(Xmd,Xdc),next(Xmd,Xdel),next(Xmd,Xpenn)
,next(Xdel,Xmd),next(Xdel,Xnj),next(Xdel,Xpenn)
,next(Xpenn,Xdel),next(Xpenn,Xnj),next(Xpenn,Xny),next(Xpenn,Xohio),next(Xpenn,Xwva),next(Xpenn,Xmd)
,next(Xnj,Xpenn),next(Xnj,Xdel),next(Xnj,Xny)
,next(Xny,Xnj),next(Xny,Xconn),next(Xny,Xmass),next(Xny,Xvt),next(Xny,Xpenn)
,next(Xconn,Xny),next(Xconn,Xri),next(Xconn,Xmass)
,next(Xri,Xconn),next(Xri,Xmass)
,next(Xmass,Xri),next(Xmass,Xnh),next(Xmass,Xvt),next(Xmass,Xny),next(Xmass,Xconn)
,next(Xnh,Xme),next(Xnh,Xvt),next(Xnh,Xmass)
,next(Xme,Xnh)
,next(Xvt,Xnh),next(Xvt,Xny),next(Xvt,Xmass)]

Xca,
Xaz,
Xnev,
Xoreg,
Xwash,
Xida,
Xut,
Xmont,
Xwyo,
Xcolo,
Xnm,
Xtex,
Xokla,
Xkans,
Xneb,
Xsdak,
Xndak,
Xminn,
Xio,
Xmo,
Xark,
Xla,
Xmiss,
Xala,
Xfla,
Xga,
Xscar,
Xncar,
Xva,
Xdc,
Xkent,
Xill,
Xwisc,
Xmich,
Xind,
Xohio,
Xwva,
Xmd,
Xdel,
Xpenn,
Xnj,
Xny,
Xconn,
Xri,
Xmass,
Xnh,
Xme,
Xvt],