C22121333132313311211113313331333132233131133133313331322133313233211   >>    C2212133313231331121111331333133313223313113313331333132213331323321   <<    C22121333132313311211113313331333132233131133133313331322133313233213   >>      C22121333132313311211113313331333132233131133133313331322133313233212   >>