"State of being verbs" are not used in ASL. I'm including the signs for "be" and "verb" here because I teach an ASL Linguistics class and occasionally refer to the concepts of "be verbs." I also feel it is important to point out that even though ASL isn't English, it does have ways to talk about English.
BE:
VERB:
American Sign Language University ™ ASL resources by Lifeprint.com © Dr. William Vicars