Pattern explanation please

[MrsGreyone]

Hi
Knitting expalnation needed please. a bit on the pattern for sleeves on a baby jumper i am doing says

'working in st st throughout inc 1 st at each end of 3rd and every foll alt 4th row....'

what does it mean by 'every foll alt 4th row' ? surely alternate 4th row is every 8th row..??
i dont understand what it means me to do, can anyone translate please?
thanks

[suzeeq]

Hmmm, yes that sounds right - every alternate 4th row would be every 8th row. It may be that other sizes have other increase rates that are different. Which pattern is it?