C11111211113313112113313331333133313331323133313112113313331311331333132232211   >>    C1111121111331311211331333133313331333132313331311211331333131133133313223221   <<    C11111211113313112113313331333133313331323133313112113313331311331333132232213   >>      C11111211113313112113313331333133313331323133313112113313331311331333132232212   >>