C22121333132313311211113313331333133313121111331333132321333121   >>    C2212133313231331121111331333133313331312111133133313232133312   <<    C22121333132313311211113313331333133313121111331333132321333123   >>      C22121333132313311211113313331333133313121111331333132321333122   >>