3 verses have
sign
in Edition Clear Qur'an by Talal Itani / Al-Muminoon (The Believers)

23:30Surely in that are signs. We are always testing.

23:45Then We sent Moses and his brother Aaron, with Our signs and a clear authority.

23:50And We made Mary’s son and his mother a sign, and We sheltered them on high ground with security and flowing springs.