Verb-irregularities, rule VII (ss,ß)

VII.	Abbreviation:	(ss, ß), (ck, k) - avoiding double consonants

	Description:	Avoiding double consonants for strong verbs, that end on "ss" or "ck"

	Example verb:	10.	essen
			erschrecken

	Application:	-	only valid for strong verbs
		-	the verb primitive ends on "s" or "ck"
		-	in the Indikativ Präteritum and Konjunktiv II (Präteritum) "ss" becomes "ß"
		-	in the Indikativ Präteritum and Konjunktiv II (Präteritum) "ck" becomes "k"

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:	-

Example:
	Präteritum:	"essen" => "du aßest", not "du assest" - (also see *1)
		"erschecken" => "du erschrakst", not "du erschrackst"

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