C22121333132313311211113313331333133313231333133313231333133313331333132321121   >>    C2212133313231331121111331333133313331323133313331323133313331333133313232112   <<    C22121333132313311211113313331333133313231333133313231333133313331333132321123   >>      C22121333132313311211113313331333133313231333133313231333133313331333132321122   >>