So your "array" would likely become 20 12 10 8 8 8, turning into maybe 20 14 11 8 8 8 (or put the odd score wherever) after racial modifiers.
So you could run a stout halfling wizard with a 20 INT, 14 DEX (for the AC), 11 CON, and then fairly terrible STR, WIS, CHA. (Or put a 10 in WIS for...