C11111333133313232233133313331333133313231312111133132223213321   >>    C1111133313331323223313331333133313331323131211113313222321332   <<    C11111333133313232233133313331333133313231312111133132223213323   >>      C11111333133313232233133313331333133313231312111133132223213322   >>