C212313222213113313112113121111331323132233133313233113313231333132212231   >>    C21231322221311331311211312111133132313223313331323311331323133313221223   <<    C212313222213113313112113121111331323132233133313233113313231333132212233   >>      C212313222213113313112113121111331323132233133313233113313231333132212232   >>