C1111133313331323223313331333133313311211111211331333131133133313231123313111   >>    C111113331333132322331333133313331331121111121133133313113313331323112331311   <<    C1111133313331323223313331333133313311211111211331333131133133313231123313113   >>      C1111133313331323223313331333133313311211111211331333131133133313231123313112   >>