C1111133313331323223313331333133313311211111211331333131133131122321   >>    C111113331333132322331333133313331331121111121133133313113313112232   <<    C1111133313331323223313331333133313311211111211331333131133131122323   >>      C1111133313331323223313331333133313311211111211331333131133131122322   >>