C11111211113313112113313331333133313331312111133112331323322121   >>    C1111121111331311211331333133313331333131211113311233132332212   <<    C11111211113313112113313331333133313331312111133112331323322123   >>      C11111211113313112113313331333133313331312111133112331323322122   >>