====FIRST==== FIRST <EXP'> FIRST E <EXP'> FIRST + FIRST <T'> FIRST E <T'> FIRST * FIRST - FIRST ( FIRST a FIRST b FIRST 8 FIRST 3
====FIRST+==== FIRST+ { -, (, a, b, 8, 3 } <EXP'> FIRST+ { E, + } FIRST+ { -, (, a, b, 8, 3 } <T'> FIRST+ { E, * } FIRST { -, (, a, b, 8, 3 }