About butterflies

Please help me to correct them, thanks.

(a) They catch many butterflies. There have / are big, small and beautiful butterflies.

(b) Some of the butterflies are big and small / but others are small.

(c) The butterflies are big and they have small six legs and beautiful wings.

(d) The butterflies have/ are big and small.

(e) They caught many butterflies. There / They were big, small and beautiful.

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(f) The butterflies have big and small sizes. Some are big and some are small.

(g) They caught butterflies. Some are big and small, but / and they are beautiful .

(h) They caught many sizes of butterflies. / It has big and small sizes (of butterflies).

(i) They are big and some are small.

(j) They caught butterflies which are big and small. They have beautiful feathers.

(k) They caught different types of butterflies. Some are big, but some are small.