C11111333133313232233133313331333133313233213331323132311211311231   >>    C1111133313331323223313331333133313331323321333132313231121131123   <<    C11111333133313232233133313331333133313233213331323132311211311233   >>      C11111333133313232233133313331333133313233213331323132311211311232   >>