Thumb (both mitts alike)
Replace held Thumb sts on needles.
Next round: K across 16 sts for Thumb, pick up and knit 2 sts in gap. Join to work in the round, PM to indicate beg of round. 18 sts
Purl 1 round.
Cast off all sts purlwise.
4/1/4 LPC: Slip 5 sts to cable needle, hold in front, k4, slip left-most st from cable needle to LH needle, p1, k4 from cable needle.
Row 1 (RS, A): Sl1, [(k1, yo) twice, k1] into 1 st, sl1 wyib. Do not turn, slide sts to other end of needle. 7 sts