1:4 + 4 + 4 × 42:(4 + 4) + 4 × 43:4 + (4 + 4 × 4)4:4 + (4 + (4 × 4))5:4 + 4 +(4 × 4)6:(4 + 4) + (4 × 4)7:4 + 4 × 4 + 48:(4 + 4 × 4) + 49:(4 + (4 × 4)) + 410:4 + (4 × 4) +...