C22121333132313311211113313331333132233131133133313331311331333132112313221   >>    C2212133313231331121111331333133313223313113313331333131133133313211231322   <<    C22121333132313311211113313331333132233131133133313331311331333132112313223   >>      C22121333132313311211113313331333132233131133133313331311331333132112313222   >>