C11111211113313112113313331333133313331312111133132213222333131   >>    C1111121111331311211331333133313331333131211113313221322233313   <<    C11111211113313112113313331333133313331312111133132213222333133   >>      C11111211113313112113313331333133313331312111133132213222333132   >>