C11111211113313112113313331333133313331312322121111331333132212131   >>    C1111121111331311211331333133313331333131232212111133133313221213   <<    C11111211113313112113313331333133313331312322121111331333132212133   >>      C11111211113313112113313331333133313331312322121111331333132212132   >>