6 bells; m = &-3-4-2-3-4-5; p = +2, " @"; b = +4, "- @"; W = repeat( m, {/*6/: b, break; p} ) H = repeat( m, {/*6?/: b, break; p} ) finish = repeat(m, p, {/123456/: break}) prove 3(W,H,W)