C1111233131211111211113313331333133313331122212111111331333132322231   >>    C111123313121111121111331333133313331333112221211111133133313232223   <<    C1111233131211111211113313331333133313331122212111111331333132322233   >>      C1111233131211111211113313331333133313331122212111111331333132322232   >>