| Variations of and | WEC | NEC-1 | NEC-2 |
| , | and | , , and | , and | , and increasing, or | , and increasing, | , , or | Or | | And | , , and | , and increasing, | , and | , , decreasing and | , and increasing, | , | , increasing, | | Increasing, , | | | , , |
| , | and | , , and | and | , or and or | , and increasing, | , | , , | | Increasing, | , and increasing and | , , increasing and | , , and , | | , , increasing and | Decreasing | , , and | | |
| , | , and | , , and | and | , or and | , increasing and | , or | | , , increasing and | And | , | | | , , and | , increasing and | and | , , | | , , and |
| , | , and | , , and | and | , and increasing, or | , increasing and | , , or | | | And | , , and decreasing | , increasing and | and | | , , increasing and | , , and | , and decreasing, | | |
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