1. A unit fraction has a numerator equal to 1, for example $\frac{1}{3},\frac{1}{7}$ and $\frac{1}{25}$.

Unit fractions can be written as the sum of two different unit fractions, for example

$\frac{1}{2}=\frac{1}{3}+\frac{1}{6}$

Write each of the following unit fractions as the sum of two different unit fractions.

$\frac{1}{4}=\frac{1}{□}+\frac{1}{□}$

$\frac{1}{5}=\frac{1}{□}+\frac{1}{□}$

$\frac{1}{6}=\frac{1}{□}+\frac{1}{□}$