C2221333133313331311233132313331333133313331311233132313331333233232321221   >>    C222133313331333131123313231333133313331333131123313231333133323323232122   <<    C2221333133313331311233132313331333133313331311233132313331333233232321223   >>      C2221333133313331311233132313331333133313331311233132313331333233232321222   >>