C11111211113313112113313331333133313231121131211113313113313232321322323222311   >>    C1111121111331311211331333133313331323112113121111331311331323232132232322231   <<    C11111211113313112113313331333133313231121131211113313113313232321322323222313   >>      C11111211113313112113313331333133313231121131211113313113313232321322323222312   >>