2 adjectives to describe deciphering

It is right, too, that the poets, the ideal interpreters of life, should be dearer to us than those who stop short with mere deciphering of what is real and actual.

They were scribbled in pencil, with little distinction between thick and thin strokes, few vowels: so that their slow deciphering, I can assure the reader, has been no holiday.

2 adjectives to describe  deciphering