C11111333133313232233133313331333133313231312111133132212111113331333223111   >>    C1111133313331323223313331333133313331323131211113313221211111333133322311   <<    C11111333133313232233133313331333133313231312111133132212111113331333223113   >>      C11111333133313232233133313331333133313231312111133132212111113331333223112   >>