I haven't tipped trifectas for a while at the greyhounds ... Lets try a few tonight at Sandown :

Race 1 : TRIFECTA : 5,6,4/5,6,4/5,6,4,2,3,1 Cost $24
Race 2 : TRIFECTA : 3,5,8/2,3,5,8/2,3,5,8 Cost $18
Race 3 : TRIFECTA : 1,3,5,7/1,3,5,7/1,3,5,7 Cost : $24

Ill post the rest later if I get a chance.