C3123223313331322121111331311331333133313331311313121111331313232321   >>    C312322331333132212111133131133133313331333131131312111133131323232   <<    C3123223313331322121111331311331333133313331311313121111331313232323   >>      C3123223313331322121111331311331333133313331311313121111331313232322   >>