C11111333133313232233133313331333133313231312111133223313112113221   >>    C1111133313331323223313331333133313331323131211113322331311211322   <<    C11111333133313232233133313331333133313231312111133223313112113223   >>      C11111333133313232233133313331333133313231312111133223313112113222   >>