1
s-stem irregular verb conjugation ("su(ru)" is the only member)
See also:
サ行変格活用 (サぎょうへんかくかつよう)
Other forms
左変 【サへん】 (ateji (phonetic) reading) (rarely used kanji form) · 佐変 【サへん】 (ateji (phonetic) reading) (rarely used kanji form)