Operators + and *  
with * having higher precedence
lRules:
lA ¨ M + A  |  M 
lM ¨ V * M  |  V
lV ¨ a  |  b  |  c
lNote that * is analogous to +.
lA is to M and + as
M is to V and *
lTherefore the same rule pattern applies to both.