Ch-sp confusing pattern in granny round

I'm stuck at end of round in granny square at instr: 12 dc and 4 ch-1sps. I successfully completed pattern till this but don't understand, especially the "and 4 ch-1 sps". Pls help :-) thx!

In case needed, here's the pattern up to & incl this part: ch 3, 2 dc in ring, (ch 1, e dc in ring) 3 times, ch 1; join with sl st in top of beginning ch --12 dc and 4 ch-1sps