C11111333133313232233133313331333133313223313331323211232333331   >>    C1111133313331323223313331333133313331322331333132321123233333   <<    C11111333133313232233133313331333133313223313331323211232333333   >>      C11111333133313232233133313331333133313223313331323211232333332   >>