var stage = acgraph.create("container");
stage.rect(22, 2 * stage.height() / 3 - 20, stage.width() - 44, stage.height() / 3 - 22)
.stroke("orange", 5, "5 5");
.moveTo(20 + 2 * step, 20)
.lineTo(20 + 3 * step, 20)
.moveTo(20 + 4 * step, 20)
.lineTo(20 + 5 * step, 20)
.moveTo(20 + 6 * step, 20)
.lineTo(20 + 7 * step, 20)
.moveTo(20 + 8 * step, 20)
.lineTo(20 + 9 * step, 20)
.moveTo(20 + 10 * step, 20)
.lineTo(20 + 11 * step, 20)
.moveTo(20 + 12 * step, 20)
.lineTo(20 + 13 * step, 20)
.moveTo(20 + 2 * step, 80)
.lineTo(20 + 4 * step, 80)
.moveTo(20 + 5 * step, 80)
.lineTo(20 + 6 * step, 80)
.moveTo(20 + 8 * step, 80)
.lineTo(20 + 9 * step, 80)
.moveTo(20 + 10 * step, 80)
.lineTo(20 + 12 * step, 80)
stage.text(20 + step / 2 - 5, 30, "5");
stage.text(20 + 3 * step / 2 - 5, 30, "5");
stage.text(20 + 5 * step / 2 - 5, 30, "5");
stage.text(20 + 7 * step / 2 - 5, 30, "5");
stage.text(20 + 9 * step / 2 - 5, 30, "...");
stage.text(20 + step / 2 - 5, 55, "5");
stage.text(20 + 3 * step / 2 - 5, 55, "5");
stage.text(20 + 6 * step / 2 - 5, 55, "10");
stage.text(20 + 9 * step / 2 - 5, 55, "5");
stage.text(20 + 11 * step / 2 - 5, 55, "5");
stage.text(20 + 14 * step / 2 - 5, 55, "10");
stage.text(20 + 17 * step / 2 - 5, 55, "5");
stage.text(20 + 19 * step / 2 - 5, 55, "...");