correct "fourty" to "forty"
['-' (need $(num rem))]
?: =(tpl 2) `(weld "twenty" sfx)
?: =(tpl 3) `(weld "thirty" sfx)
- ?: =(tpl 4) `(weld "fourty" sfx)
+ ?: =(tpl 4) `(weld "forty" sfx)
?: =(tpl 5) `(weld "fifty" sfx)
?: =(tpl 6) `(weld "sixty" sfx)
?: =(tpl 7) `(weld "seventy" sfx)
