C11111211113313112113313331333132313331322113121111331312233113121   >>    C1111121111331311211331333133313231333132211312111133131223311312   <<    C11111211113313112113313331333132313331322113121111331312233113123   >>      C11111211113313112113313331333132313331322113121111331312233113122   >>