• writens,
• writins,
• writings,
• write ins,
• qriteins,
• ariteins,
• sriteins,
• eriteins,
• 3riteins,
• 2riteins,
• weiteins,
• wditeins,
• wfiteins,
• wtiteins,
• w5iteins,
• w4iteins,
• wruteins,
• wrjteins,
• wrkteins,
• wryteins

The adjective form of the word "writeins" would be "write-in".

The plural form of "writeins" is "write-ins"

The singular form of the word "writeins" is "writein"