add: forth 2
add: forth 2

lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler,lunixbochs/project-euler