#Make a (----) so you can cancel the unit you have to the units you want. This may require more than one (----) thereby needing intermediate units. |
#Make a (----) so you can cancel the unit you have to the units you want. ##This may require more than one (----) thereby needing intermediate units. ##Rules to cancel units: if undesired unit on top, you put unit on bottom of (----) and if it is on the bottom you put undesired unit on top of (----). |