| tower be | 13.82 | The north tower was on fire. | ||
| tower collapse | 6.98 | Both towers collapsed. | ||
| tower fall | 3.75 | The south tower had fallen. | ||
| tower stand | 2.76 | The towers were left standing. | ||
| tower have | 2.17 | But the towers have no markers. | ||
| tower come | 1.51 | The tower comes down. | ||
| tower say | 1.32 | Towers said. | ||
| tower rise | 0.99 | New office towers are rising. | ||
| tower remain | 0.92 | And the great tower remains unfinished. | ||
| tower loom | 0.59 | Two other towers may soon loom over Times Square as well. | ||
| tower provide | 0.59 | The historic tower once provided a vantage of three states. | ||
| tower go | 0.53 | Even so, there are not many places a tower can go. | ||
| tower house | 0.53 | Its central tower now houses a museum. | ||
| tower make | 0.53 | These two towers make a frame of time as well as space. | ||
| tower begin | 0.46 | The tower began with five beels. | ||
| tower use | 0.39 | The World Trade Center towers used to be directly behind. | ||
| tower become | 0.33 | Towers became slenderer and many had elegant spires set on them. | ||
| tower continue | 0.33 | Tower continued. | ||
| tower explode | 0.33 | The enemy tower explodes. | ||
| tower give | 0.33 | A minute later the tower gave a wind shear alert. |