pushd 1_Krashen/ && make all && popd;
pushd 2_Gille/ && make all && popd;
pushd 3_Deglise/ && make all && popd;
pushd 4_Wickelgren/ && make all && popd;
pushd 5_Morrow/ && make all && popd;
pushd 6_Combined/ && make all && popd;