Generating Equivalent Expressions - Round 1

1 + 1

1 + 1 + 1

(1 + 1) + 1

(1+1) + (1+1)

(1 +1) + (1 + 1 + 1)

x + x

x + x + x

(x + x) + x

(x + x) + (x + x)

(x + x) + (x + x + x)