C1111233131211111211113313331333133313331333131211113312111133133313232332131   >>    C111123313121111121111331333133313331333133313121111331211113313331323233213   <<    C1111233131211111211113313331333133313331333131211113312111133133313232332133   >>      C1111233131211111211113313331333133313331333131211113312111133133313232332132   >>