C111112111133131121133133313331333133313331312111133132233132313231221   >>    C11111211113313112113313331333133313331333131211113313223313231323122   <<    C111112111133131121133133313331333133313331312111133132233132313231223   >>      C111112111133131121133133313331333133313331312111133132233132313231222   >>