C312322331333132212111133133313331333133312121111121111331211111133132222121   >>    C31232233133313221211113313331333133313331212111112111133121111113313222212   <<    C312322331333132212111133133313331333133312121111121111331211111133132222123   >>      C312322331333132212111133133313331333133312121111121111331211111133132222122   >>