C1111233131211111211113313331333133313331333133313331333133313112112113211311   >>    C111123313121111121111331333133313331333133313331333133313331311211211321131   <<    C1111233131211111211113313331333133313331333133313331333133313112112113211313   >>      C1111233131211111211113313331333133313331333133313331333133313112112113211312   >>