original: the proportion of c-types may actually be greater than this , because c-types are much darker than most other asteroid types except d-types and others common only at the extreme outer edge of the main belt .
simplifications: the portion of c-types may actually be greater than this , because c-types are much darker than most other asteroid types except d-types and others common only at the extreme outer edge of the main belt . the proportion of c-types may actually be greater than this ; because c-types are much darker than most other asteroids except d-types and others common only at the extreme outer edge of the main belt . the ratio of c-types may really be more than this , because c-types are much darker than other minorl planet types , not counting d-types and others common only at the most outer edge of the main belt . the proportion of c-types may be greater than this because c-types are darker than most asteroid types except d-types and others common only at the extreme outer edge of the main belt . most c-types are darker than other asteroid types , except for asteroids known as d-types and asteroids at the edge of the main belt . the proportion of c-types may be greater than this , because c-types are much darker than most other asteroid types except d-types and others common only at the extreme outer edge of the main belt . asteroids have different levels of darkness ; d-types are the darkest the proportion of c-types may actually be greater than this , because c-types are much darker than most other asteroid types except d-types and others common only at the extreme outer edge of the main belt .