C1111233131211111211113313331333133313331311211331333131133133313232231   >>    C111123313121111121111331333133313331333131121133133313113313331323223   <<    C1111233131211111211113313331333133313331311211331333131133133313232233   >>      C1111233131211111211113313331333133313331311211331333131133133313232232   >>