C11111333133313232233133313331333133112111112113313231311233321   >>    C1111133313331323223313331333133313311211111211331323131123332   <<    C11111333133313232233133313331333133112111112113313231311233323   >>      C11111333133313232233133313331333133112111112113313231311233322   >>