C11111211113313112113313331333133313331333131211113313331333132112323233111   >>    C1111121111331311211331333133313331333133313121111331333133313211232323311   <<    C11111211113313112113313331333133313331333131211113313331333132112323233113   >>      C11111211113313112113313331333133313331333131211113313331333132112323233112   >>