C1111233131211111211113313331333133313331333133313331333133311211331323213221   >>    C111123313121111121111331333133313331333133313331333133313331121133132321322   <<    C1111233131211111211113313331333133313331333133313331333133311211331323213223   >>      C1111233131211111211113313331333133313331333133313331333133311211331323213222   >>