C11111211113313112113313331333133313331333133213331333133313331323112332311   >>    C1111121111331311211331333133313331333133313321333133313331333132311233231   <<    C11111211113313112113313331333133313331333133213331333133313331323112332313   >>      C11111211113313112113313331333133313331333133213331333133313331323112332312   >>