C1111133313331323223313331333133313231323112113313231232313231323123121111   >>    C111113331333132322331333133313331323132311211331323123231323132312312111   <<    C1111133313331323223313331333133313231323112113313231232313231323123121113   >>      C1111133313331323223313331333133313231323112113313231232313231323123121112   >>