Due to a typo, the instructions for Row 28 (30, 32, 34, 36) should read as follows  

[1 dc, 1 tr] across Front

Right to last st, 1 dc, 18 (20, 22, 24, 26) ch, working into Front

Left [1 dc, 1 tr] across to last st, 1 dc, 1 ch, turn.