!$ F\ \cup\ G\ =\ \left\{1,2,3,5,13,15\right\} !$

!$ F\ \cup\ G\ =\ \left\{1,3,5,8,13,21\right\} !$

!$ F\ \cup\ G\ =\ \left\{1,2,3,5,8,21\right\} !$

!$ F\ \cup\ G\ =\ \left\{1,2,3,3,5,5,8,21\right\} !$

!$ F\ \cup\ G\ =\ \left\{1,2,3,5,8,13,21\right\} !$