C11111211113313112113313331333133313331333132313331333133313331313211111   >>    C1111121111331311211331333133313331333133313231333133313331333131321111   <<    C11111211113313112113313331333133313331333132313331333133313331313211113   >>      C11111211113313112113313331333133313331333132313331333133313331313211112   >>