C1111133313331323223313331333133313231323112113313311232313113313221211   >>    C111113331333132322331333133313331323132311211331331123231311331322121   <<    C1111133313331323223313331333133313231323112113313311232313113313221213   >>      C1111133313331323223313331333133313231323112113313311232313113313221212   >>