Abbreviations: st – stitch, sl-st – slip stitch, ch – chain, sc – single crochet, hdc – half double crochet, dc – double crochet, tr – treble crochet, dtr – double treble crochet, fp – front post, bp – back post, bl – back loop, tbl – third back loop
ROUND 18 (Color C). Working behind rounds 16 and 17 join with a standing sc in any tr of round 15, *ch5, working in front of rounds 16 and 17 in 2tr cluster 2 tog (2tr cluster, ch4, 2tr cluster), ch5, working behind round 16 and 17 sc in next tr of round 15 (R18.1)*, repeat ** 16 times, omit last sc. Join to standing sc with a sl-st, fasten off, and secure ends. (R18.2) Stitch count: 16 sc, 16 ch4 spaces, 32 ch5 spaces, 32 2tr cluster
ROUND 19 (Color E). Join with a standing dc in 1st dc of any 2dc of round 17, *dc in next 3 sts, fphdc around 1st cluster of round 18, skip next dc of round 17, working in front of ch4 space of round 18 (dc in next dc of round 17, 2dc in next dc of round 17, dc in next st of round 17), fphdc around 2nd cluster of round 18, skip next dc of round 17, dc in next 3 dc of round 17 (R19.1)*, repeat ** 16 times, omit last dc. Join to standing dc with a sl-st. (R19.2) Stitch count: 32 fphdc, 160 dc
ROUND 20 (Color E). ch1 (does not count as stitch), sc in same st, *sc in next 2 sts, skip next 2 sts, 2dc cluster in next st, {ch2, 2tr cluster in next st} 2 times, ch2, 2dc cluster in next st, skip next 2 sts, sc in next 2 sts (R20.1) *, repeat ** 16 times, omit last sc. Join to 1st sc with a sl-st, fasten off, and secure ends. (R20.2) Stitch count: 64 sc, 32 2dc cluster, 32 2tr cluster, 48 ch2 spaces
ROUND 21 (Color D). Join with a standing sc2tog over any 2nd and 3rd sc, *sc in next st, fphdc around next st, 4hdc in ch2 space, fphdc around next st, 5hdc in ch2 space, fphdc around next st, 4hdc in ch2 space, fphdc around next st, sc in next st, sc2tog over next 2 sts (R21.1)*, repeat ** 16 times, omit last sc2tog. Join to standing sc2tog with a sl-st. (R21.2) Stitch count: 32 sc, 16 sc2tog, 208 hdc, 64 fphdc
