C1111233131211111211113313331333133313331312331333133112112131121   >>    C111123313121111121111331333133313331333131233133313311211213112   <<    C1111233131211111211113313331333133313331312331333133112112131123   >>      C1111233131211111211113313331333133313331312331333133112112131122   >>