#a-#d：纯四度；转位音程#d-#a：纯五度bb-f：纯五度；转位音程f-bb：纯四度ba-#b：倍增二度；转位音程#b-ba：倍减七度f-#c：增五度；转位音程#c-f：减四度#d-bb：减六度；转位音程bb-#d：增三度
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