C11111333133313232233133313331333133313332322331331121111331323211232313221   >>    C1111133313331323223313331333133313331333232233133112111133132321123231322   <<    C11111333133313232233133313331333133313332322331331121111331323211232313223   >>      C11111333133313232233133313331333133313332322331331121111331323211232313222   >>