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fifty-dollar fifties-dollar fifty-dollars fifties-dolls
work out come up give out make up
one other fifty dollars the same amount also more fifty dollars another fifty
cost，cost cost，paid paid，cost paid，paid
at half cost to at a cost of at any cost at all costs
asked charged bought offered
wealth is wealths is wealth are wealths are
to contribute contributing contributed to be contributing
How long How many How often How much
Often Once Whoever Sometimes
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