Among the two wordinternal elements, derivational affixes are more closely related to their roots than inflectional affixes to their stems.
bengkyou yoku/nagaku/... suru well/long time c) [bengkyou-to undou]-bakari/wa/... suru -and exercise Although it is not very natural for such independent words as yoku and nagaku to come between the two elements, as we can see in (b), delimiters like -bakari and -wa are allowed as in (a).