C11111211113313112113313331333133313331333132313331333133313331311221123133131   >>    C1111121111331311211331333133313331333133313231333133313331333131122112313313   <<    C11111211113313112113313331333133313331333132313331333133313331311221123133133   >>      C11111211113313112113313331333133313331333132313331333133313331311221123133132   >>