C11111333133313232233133313331333133313231312111133112211232223331311   >>    C1111133313331323223313331333133313331323131211113311221123222333131   <<    C11111333133313232233133313331333133313231312111133112211232223331313   >>      C11111333133313232233133313331333133313231312111133112211232223331312   >>