C11111211113313112113313331333133313331333132313331333133313221333221231   >>    C1111121111331311211331333133313331333133313231333133313331322133322123   <<    C11111211113313112113313331333133313331333132313331333133313221333221233   >>      C11111211113313112113313331333133313331333132313331333133313221333221232   >>