Cheerio

From general columns: centers Tag with each other, Press Ahead, and Face In. ("Squeeze like a Couple Up.") Among the ends, the lead Runs, and then they Press Ahead. If both ends are leads, they Trade before pressing ahead. If neither is a lead, they do not sashay. They simply Press Ahead as they are.

\sxvlines{b2s,g3s,b1s,g4s} \syhlines{g3s,b2s,g2s,b3s}
2 4 3 1 1 3 4 2 3 1 2 4 2 4 3 1
before Cheerio after




\sxvlines{b3s,b4s,g4n,g1n} \syhlines{b4s,g3s,b3s,g2s}
3 1 4 2 4 2 1 3 4 2 3 1 3 1 2 4
before Cheerio after