Verb-irregularities, rule VIII (ß,ss)

VIII.	Abbreviation:	(ß,ss) - ß-replacement

	Description:	Replacement of "ß" by "ss" for strong verbs, whose verb primitive ends on "ß"

	Example verb:	11.	reißen

	Application:	-	only valid for strong verbs
		-	the verb primitive ends on "ß"
		-	this rule applies only if the Präteritum is not built with "ie" (e.g. not valid for "heißen", as this becomes "hieß" and not "hiess")
		-	the Indikativ Präteritum, Konjunktiv II (Präteritum) as well as the Partizip II change the "ß" to "ss"

Applies for (weak verbs):
	Präsens:	-
	Präteritum:	-
	Konj II (Prät):	-
	Imperativ:	-
	Partizip:	-

Applies for (strong verbs):
	Präsens:	-
	Präteritum:	all forms
	Konj II (Prät):	all forms
	Imperativ:	-
	Partizip:	always

Example:
	Präteritum:	"du rissest", not "du rißest" - (also see *1)

*1) also see: additional rules for building Swiss German verbs