Which preposition to use with understandable

to Occurrences 2%

There was unfortunately nobody among us who was inclined to make it more understandable to him by a few drachmas.

in Occurrences 1%

There were blanks, unsaid things, twists of phrase, eloquent nothings which, wonderfully understandable in themselves, do not report well.

than Occurrences 1%

Germany's behaviour was more understandable than the New Dawn, and Spike Brennon was much simpler in his words.

under Occurrences 1%

She had known very well upon which side her bread was buttered, and as to her giving way to his whims in the absurd way she didthat, too, was understandable under the circumstances.

Which preposition to use with  understandable