C22121333132313311211113313331333133313331333132313231333132312121   >>    C2212133313231331121111331333133313331333133313231323133313231212   <<    C22121333132313311211113313331333133313331333132313231333132312123   >>      C22121333132313311211113313331333133313331333132313231333132312122   >>