C11111211113313112113313331333133313331333132313331333133313331323132311231231   >>    C1111121111331311211331333133313331333133313231333133313331333132313231123123   <<    C11111211113313112113313331333133313331333132313331333133313331323132311231233   >>      C11111211113313112113313331333133313331333132313331333133313331323132311231232   >>