User blog comment:DancePowderer/Find It!/@comment-3213092-20111021195831/@comment-3213092-20111021201235

Hahahahaha yeah...

Basically 'na' itself means:
 * on
 * for
 * at
 * in
 * of
 * into
 * by
 * upon
 * onto
 * against
 * atop

So maybe they are : AGAINST COWS..!!!!