C11111333133313232233133313331333133313231312323131133131231231   >>    C1111133313331323223313331333133313331323131232313113313123123   <<    C11111333133313232233133313331333133313231312323131133131231233   >>      C11111333133313232233133313331333133313231312323131133131231232   >>