C22121333132313311211113313331333133313331211113313331333132313331322221   >>    C2212133313231331121111331333133313331333121111331333133313231333132222   <<    C22121333132313311211113313331333133313331211113313331333132313331322223   >>      C22121333132313311211113313331333133313331211113313331333132313331322222   >>