C11111333133313232233133313331333133313231312111133132212123321   >>    C1111133313331323223313331333133313331323131211113313221212332   <<    C11111333133313232233133313331333133313231312111133132212123323   >>      C11111333133313232233133313331333133313231312111133132212123322   >>