C11111211113313112113313331333133313331312322121111331333132233113121   >>    C1111121111331311211331333133313331333131232212111133133313223311312   <<    C11111211113313112113313331333133313331312322121111331333132233113123   >>      C11111211113313112113313331333133313331312322121111331333132233113122   >>