Knitting pattern problem

I am struggling with this pattern, please someone help me!
I am making a aran sweater with 4 row pattern and shaping raglan armholes, the pattern reads: keeping pattern correct cast of 2sts at beg of next 2 rows
3rd row K1 sl1 K1 psso work in pattern to last 3sts K2tog K1.
4th row. P2 work to last 2sts P2.
Rept the last 2 rows until 85sts remain finishing on a wrong side.
Next row K1 Sl1 K2tog psso work to last 4sts K3tog K1.
Work 4th 3rd 4th rows again
Rept the last rows until 37sts remain finishing on the Dec row.
I don’t understand what are the last4 rows

Essentially, it sounds like, after you get to 85sts the repeat is:
row 1: (former Next row) K1, sl1, K2tog, psso work to last 4sts K3tog K1. Decreases 4sts across the row.)
row 2: (former 4th Row) P2, work to last 2sts P2.
row 3: (former 3rd Row) K1, sl1, K1, psso, work in part to last 3sts K2tog, K1 (Decreases 2sts across the row.)
row 4: (former 4th Row) P2, work to last 2sts P2.