• qhite book,
• ahite book,
• shite book,
• ehite book,
• 3hite book,
• 2hite book,
• wgite book,
• wbite book,
• wnite book,
• wjite book,
• wuite book,
• wyite book,
• whute book,
• whjte book,
• whkte book,
• whote book,
• wh9te book,
• wh8te book,
• whire book,
• whife book

The adjective form of the phrase "white book" would be "white".

The plural form of "white book" is "white books"

The singular form of the word "white book" is "white book". The word remains the same in both singular and plural form.