C11111211113313112113313331333133313331333121131211113313331323222323213223331   >>    C1111121111331311211331333133313331333133312113121111331333132322232321322333   <<    C11111211113313112113313331333133313331333121131211113313331323222323213223333   >>      C11111211113313112113313331333133313331333121131211113313331323222323213223332   >>