Unique rules when forming that grammar are highlighted like this.
Example sentences follow these rules too!
Joining and Nesting Markers:
Verb[た/る] - means that dictionary form and ta form are accepted.
Verb[causative[て]] - means て form of the causative form of the verb.
(A) べくもない is a formal written expression used when there is no possibility of (A) happening at all. It generally follows expressions like 望む、疑う、知る、比べる、及ぶ、考える、否定、かなう、勝つ、想像する, and does not appear in daily conversation.