C22121333132313311211113313331333133313121111331333133313331323133313231313221   >>    C2212133313231331121111331333133313331312111133133313331333132313331323131322   <<    C22121333132313311211113313331333133313121111331333133313331323133313231313223   >>      C22121333132313311211113313331333133313121111331333133313331323133313231313222   >>