C312322331333132212111133133313331323133313221211111231211111211111212122311   >>    C31232233133313221211113313331333132313331322121111123121111121111121212231   <<    C312322331333132212111133133313331323133313221211111231211111211111212122313   >>      C312322331333132212111133133313331323133313221211111231211111211111212122312   >>