C11111211113313112113313331333133313331333132313331333133313331333133331331221   >>    C1111121111331311211331333133313331333133313231333133313331333133313333133122   <<    C11111211113313112113313331333133313331333132313331333133313331333133331331223   >>      C11111211113313112113313331333133313331333132313331333133313331333133331331222   >>