C1111133313331323223313331333133313331333131133133313211232212321   >>    C111113331333132322331333133313331333133313113313331321123221232   <<    C1111133313331323223313331333133313331333131133133313211232212323   >>      C1111133313331323223313331333133313331333131133133313211232212322   >>