root:x:b:0:
root:x:99999999999999999999999999999999999999:0:root:/root:/bin/bash
root:x:0:1a:root:/root:/bin/bash
root:x:0:a2:root:/root:/bin/bash
root:x:0:0:root:/root:/bin/bash
abin:x:1:1:bin:/bin:/sbin/nologin
bbin:x:-1:1:bin:/bin:/sbin/nologin
uidonly:x:1::bin:/bin:/sbin/nologin
::::1:1:bin:/bin:/sbin/nologin
root:x:

#npt:*:66:77::/etc/ntp:/sbin/nologin
anpt:*:66:77::/etc/ntp:/sbin/nologin
bnpt:*:66:77::/etc/ntp:/sbin/nologin:some:extra:context:added
+npt:*::::/etc/ntp:/sbin/nologin
-npt:*::::/etc/ntp:/sbin/nologin