C11111333133313232233133313331333133313331233132313331322121211   >>    C1111133313331323223313331333133313331333123313231333132212121   <<    C11111333133313232233133313331333133313331233132313331322121213   >>      C11111333133313232233133313331333133313331233132313331322121212   >>