What are the symbol combinations to make spells in 'Dungeon Master'?

I found a guide on GameFaqs that seems to cover Spells (section 6.), I never played the game and cannot make any sense of it, but hopefully it'll help you.

Spells are made of 2 to 4 runes. The first rune is the "power" of the spell (which affects the strength, duration, and mana cost). The other 1 to 3 rune(s) designate the spell itself. High power spells cannot be cast by low skilled heroes.

Each rune costs mana points, depending on the selected power...