C22121333132313311211113313331333132233131133133313331312111112113313231211   >>    C2212133313231331121111331333133313223313113313331333131211111211331323121   <<    C22121333132313311211113313331333132233131133133313331312111112113313231213   >>      C22121333132313311211113313331333132233131133133313331312111112113313231212   >>