Soybeans are showing strength on Tuesday, with contracts up 1 to 3 cents. Futures posted Monday gains of 4 to 5 ½ cents as bulls were in a jollier mood to start the holiday week. Preliminary open interest dropped 10,552 contracts, mostly in the January (29,199 contracts) ahead of thin Holiday trade, options expiration on Friday and first notice day next Wednesday.  The cmdtyView national average Cash Bean price was 4 1/4 cents higher at $9.83 3/4. Soymeal futures were 50 cents to$1 higher on Monday. Soy O ...