The inclusion list referred to in the earlier discussion of keyword validation contains special words that would normally be excluded from indexing; typically these are alphanumeric compound words that begin with a numeric character, such as The inclusion list is currently defined as follows:Inclusion List Contents
| 1day | 28day | 1week | 3mo | 1year | 10year | 1st |
| 2day | 30day | 1wk | 3month | 1yr | 10yr | 2nd |
| 3day | 45day | 2week | 6mo | 2year | 15year | 3rd |
| 4day | 60day | 2wk | 6month | 2yr | 15yr | 4th |
| 5day | 90day | 4week | 9mo | 3year | 20year | 5th |
| 6day | 91day | 4wk | 9month | 3yr | 20yr | 10th |
| 7day | 120day | 6week | 12mo | 4year | 30year | 13th |
| 10day | 180day | 6wk | 12month | 4yr | 30yr | 15th |
| 14day | 270day | 8week | 18mo | 5year | 20th | |
| 15day | 8wk | 18month | 5yr | 25th | ||
| 24mo | 7year | 30th | ||||
| 24month | 7yr | 401 | 401k |