bionic	server	release	20230424
cosmic	server	release	20190628
disco	server	release	20200115
eoan	server	release	20200610
lucid	server	release	20150127
precise	server	release	20170330
saucy	server	release	20140608
trusty	server	release	20191107
utopic	server	release	20150620
wily	server	release	20160715
xenial	server	release	20210928
focal	server	release	20230502
groovy	server	release	20210622
hirsute	server	release	20220118
jammy	server	release	20230608
lunar	server	release	20230426