C11111211113313112113313331333133313331333132313331333133313331313321121   >>    C1111121111331311211331333133313331333133313231333133313331333131332112   <<    C11111211113313112113313331333133313331333132313331333133313331313321123   >>      C11111211113313112113313331333133313331333132313331333133313331313321122   >>