C1111133313331323223313331333133313233231311211331333132313212121   >>    C111113331333132322331333133313331323323131121133133313231321212   <<    C1111133313331323223313331333133313233231311211331333132313212123   >>      C1111133313331323223313331333133313233231311211331333132313212122   >>