Don't understand logistics
I am making vintage teacozy pattern that looks like a pineapple. I am using double strands of yarn. I have just completed a row of purl with double wrap on each stitch...next row...sl4 sts and drop extra wraps, replace 4 long sts on left needle (k4tog,p4tog) twice into long sts. I can not understand this part in the brackets. Can you try and help?