C11111333133313232233133313331333133313223313331323132233133323221   >>    C1111133313331323223313331333133313331322331333132313223313332322   <<    C11111333133313232233133313331333133313223313331323132233133323223   >>      C11111333133313232233133313331333133313223313331323132233133323222   >>