Group Verbs

Call at =Yesterday he called at my office.
Call in =They called in a doctor.
Call on =He called on me.;
Call over =The teacher called over the students.
Call up =I can not call up his name.
Call out =The girl called out at the top of her voice.

Call off =The workers called off their strike.
Call for =My father called for an explanation from me.
Call upon =The poor boy called upon me for help.
Call upon =I will call upon you tomorrow