C11111211113313112113313331333133313331333132313331333133313331333133312113211   >>    C1111121111331311211331333133313331333133313231333133313331333133313331211321   <<    C11111211113313112113313331333133313331333132313331333133313331333133312113213   >>      C11111211113313112113313331333133313331333132313331333133313331333133312113212   >>