C11111211113313112113313331333133313331333132313331333133313331311213331121121   >>    C1111121111331311211331333133313331333133313231333133313331333131121333112112   <<    C11111211113313112113313331333133313331333132313331333133313331311213331121123   >>      C11111211113313112113313331333133313331333132313331333133313331311213331121122   >>