C11111333133313232233133313331333133313231312111133132331132211   >>    C1111133313331323223313331333133313331323131211113313233113221   <<    C11111333133313232233133313331333133313231312111133132331132213   >>      C11111333133313232233133313331333133313231312111133132331132212   >>