C22121333132313311211113313331333133313121111331333133313331323133313233231211   >>    C2212133313231331121111331333133313331312111133133313331333132313331323323121   <<    C22121333132313311211113313331333133313121111331333133313331323133313233231213   >>      C22121333132313311211113313331333133313121111331333133313331323133313233231212   >>