The phrase 'three initial' is correct and usable in written English.
You can use it when you want to refer to three letters that are used as an abbreviation representing a name, such as 'R.T.D'.
There were only three initial installments, the last of which was broadcast on Feb. 23, 1955.
"Mr. Alladin is from Trinidad and the three initial assailants, as described by him, are American blacks," he said.
The three initial investments, which all received between £100k-£500k in seed funding, all focus on consumer data.
Frankfurt was the home of three initial public offerings today and all climbed slightly from the opening prices.
It has three initial clients, Mr. Vincent said, one of which is "a publisher rethinking its master brand".
There were three initial requirements for the VIKING cockpit.
Mean readings were then taken of the three initial readings.
Clients influence the three initial stages of the OLC.
The vibration responses of three initial conditions are shown.
To mark its launch, Sony is selling three initial, completed projects on First Flight from today.
