These are the written instructions for this square. This pattern is written in US terminology. It is not my pattern, but came via a symbol chart (more details on my website).

Requirements:
4mm Crochet Hook
DK Mercerised Cotton Yarn
Darning Needle

Abbreviations:
sc single crochet
dc double crochet
dtr double triple crochet
cl cluster
sl st slip stitch
ch chain
sc single crochet
yo yarn over
st(s) stitch(es)
sp space
beg beginning
rep repeat

Special Stitches
beg dc cl: 2 ch, work another 4 incomplete dc sts over the next 4 sts (yo, insert hook into next st, yo, bring yarn to front of work, yo, draw yarn through two loops on the hook), rep from 3 more times, yo and draw yarn through all loops on hook to make a cluster.

dc cl: work 5 incomplete dc sts over the next 5 sts (yo, insert hook into next st, yo, bring yarn to front of work, yo, draw yarn through two loops on the hook), rep from 4 more times, yo and draw yarn through all loops on hook to make a cluster.

dtr: yarn around hook 3 times, insert hook into specified st or sp, yarn around hook and draw through this scooped yarn to front of work, yarn around hook, draw through two loops on hook only 4 times.