| Value | Category |
|---|---|
| 1 | It was main use – more than 80% |
| 2 | It was important use – 60-80% |
| 3 | It was medium use – 40-60% |
| 4 | It was less important use – 20-40% |
| 5 | It was not significant use – Less than 20% |
| 6 | It was not used – 0% |
| 1000000001 | .C |
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