C1111233131211111211113313331333131133131121131211113313223313232333132211   >>    C111123313121111121111331333133313113313112113121111331322331323233313221   <<    C1111233131211111211113313331333131133131121131211113313223313232333132213   >>      C1111233131211111211113313331333131133131121131211113313223313232333132212   >>