V n on n
The 'gamble' group
These verbs are concerned with gambling. The noun group indicates the stake, that is, what it is that you gamble, such as a pound or your life.
I'll bet a quid on anything, but never more than a fiver.
Having decided to wager their lives on a toss of the dice, what value might they attach to the lives of others?
The preposition on is sometimes followed by an '-ing' clause.
She gambled a small fortune on hiring a top American publicist to plug her talents.
In the case of bet, gamble, lay, and stake the preposition on is sometimes followed by a noun group and an '-ing' clause. This pattern is V n on n -ing.
bet gamble lay place put stake wager
You wouldn't want to stake your life on the signal being picked up.