C1111133313331323223313331333133313331333232233133112111111221123231311331   >>    C111113331333132322331333133313331333133323223313311211111122112323131133   <<    C1111133313331323223313331333133313331333232233133112111111221123231311333   >>      C1111133313331323223313331333133313331333232233133112111111221123231311332   >>