C11111211113313112113313331333133313331322133313331323112113121121   >>    C1111121111331311211331333133313331333132213331333132311211312112   <<    C11111211113313112113313331333133313331322133313331323112113121123   >>      C11111211113313112113313331333133313331322133313331323112113121122   >>