C1111233131211111211113313331333133313232321333133313331333131121211231   >>    C111123313121111121111331333133313331323232133313331333133313112121123   <<    C1111233131211111211113313331333133313232321333133313331333131121211233   >>      C1111233131211111211113313331333133313232321333133313331333131121211232   >>