C11111211113313112113313331333133313331312111133133313332323213221   >>    C1111121111331311211331333133313331333131211113313331333232321322   <<    C11111211113313112113313331333133313331312111133133313332323213223   >>      C11111211113313112113313331333133313331312111133133313332323213222   >>