Karnaugh maps is a laborious, tedious and error prone process. But it proved a very long and laborious undertaking. Hand methods of production were very laborious and costly and precision was difficult to achieve. The calculations themselves, however, were extremely laborious and time-consuming. This process was laborious and time-consuming, confined mainly to wealthier households. This process is very laborious, expensive and requires careful planning. However, crystallizing an antibody is often laborious and time-consuming. In the last years of his life, simple tasks such as writing required laborious effort. Weeding by hand is laborious and inefficient. Martha prays for strength to continue faring through her difficult and laborious life. Cryptanalysis of the new mechanical devices proved to be both difficult and laborious. Deciphering Maya writing proved a long and laborious process. The bookmaking process was long and laborious. The process was slow and laborious; axes were unknown. Thinner laminations reduce losses, but are more laborious and expensive to construct.