C11111333133313232233133313331333133313231312111133112211231322311   >>    C1111133313331323223313331333133313331323131211113311221123132231   <<    C11111333133313232233133313331333133313231312111133112211231322313   >>      C11111333133313232233133313331333133313231312111133112211231322312   >>