18.

patterns for your sunday:
k1p1 ribbing:
knit purl knit purl knit purl
knit purl knit purl knit purl
knit purl knit purl knit purl
knit purl knit purl knit purl
k2p2 ribbing:
knit knit purl purl knit knit purl purl
knit knit purl purl knit knit purl purl
knit knit purl purl knit knit purl purl
knit knit purl purl knit knit purl purl
a lil checkerboard pattern:
knit knit purl purl knit knit purl purl
knit knit purl purl knit knit purl purl
purl purl knit knit purl purl knit knit
purl purl knit knit purl purl knit knit

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