C312322331333132212111133133313331323133313221211113313232233222311   >>    C31232233133313221211113313331333132313331322121111331323223322231   <<    C312322331333132212111133133313331323133313221211113313232233222313   >>      C312322331333132212111133133313331323133313221211113313232233222312   >>