Starting with the radical, intermediate endings (zero or more) may be added, after which exactly one terminal ending must be added. As the endings are added on, the appropriate sound changes and other adjustments should be made, as described in the Notes. Also, each intermediate ending will change the class of the compound as indicated in the chart. In Japanese writing, the ending as written in hiragana includes the final roman letter of the radical (except for class-II verbs whose radical ends in a vowel). This letter will of course be modified by sound changes when appropriate.
Not all combinations and orderings of the endings described here are acceptable. For example, when an explicit combination such as Passive Causative is given, then the individual Passive and Causative endings should not be combined. The order of intermediate endings is given roughly in the order in which they should be combined, when such combinations are acceptable.