diff --git a/etc/lines.list b/etc/lines.list
index ac7217b..fb0e3aa 100644
--- a/etc/lines.list
+++ b/etc/lines.list
@@ -2,18 +2,18 @@
 # columns:   frequency (GHz)  formula transition
 
 #  The CO ladder
-110.2013543 13co 1-0
-115.2712018   co 1-0
-220.39868   13co 2-1
-230.53800     co 2-1
-330.58797   13co 3-2
-345.79599     co 3-2
-461.04077     co 4-3
-576.26793     co 5-4
-691.47308     co 6-5
-806.65180     co 7-6
-921.79970     co 8-7
-1036.912      co 9-8
+110.2013543 13CO 1-0
+115.2712018   CO 1-0
+220.39868   13CO 2-1
+230.53800     CO 2-1
+330.58797   13CO 3-2
+345.79599     CO 3-2
+461.04077     CO 4-3
+576.26793     CO 5-4
+691.47308     CO 6-5
+806.65180     CO 7-6
+921.79970     CO 8-7
+1036.912      CO 9-8
 
 112.35928 C17O 1-0
 109.78218 C18O 1-0
@@ -21,71 +21,71 @@
 
 # other random things to be sorted out
 
-89.18853 HCO+
-97.98095 CS
-90.66356 HNC
-271.98111 HNC
-87.3169 CCH
-87.40199 CCH
-262.00426 CCH
-262.06499 CCH
-262.20861 CCH
-72.41493 DCN
-217.2386 DCN
-289.64496 DCN
-80.57829 HDO
-87.96281 HDO
-207.11085 HDO
-207.34571 HDO
-210.31065 HDO
-225.89672 HDO
-228.07214 HDO
-232.31268 HDO
-241.56155 HDO
-241.97357 HDO
-255.05026 HDO
-258.22376 HDO
-266.16107 HDO
-272.90754 HDO
-
-72.03931 DCO+
-144.07729 DCO+
-216.11258 DCO+
-288.14386 DCO+
-
-86.24337  SiO
-86.84696 SiO
-
-109.21757 13CN
-108.7802 13CN
-108.42689 13CN
-
-109.17365 HC3N
-100.0764 HC3N
-90.979 HC3N
-81.88148 HC3N
-72.78383 HC3N
-
-86.09395 SO
-99.29987 SO
-109.25222 SO
-
-86.75429 H13CO+
-87.09085 HN13C
-
-88.63185 HCN
-
-113.49097 CN
-113.19128 CN
-86.34016 H13CN
-
-
-72.40909 H2CO
-72.83795 H2CO
-101.33299 H2CO
-
-93.17378 N2H+
-92.49427 13CS
-
-96.41295 C34S
+89.18853 HCO+  ?
+97.98095 CS  ?
+90.66356 HNC  ?
+271.98111 HNC  ?
+87.3169 CCH  ?
+87.40199 CCH  ?
+262.00426 CCH  ?
+262.06499 CCH  ?
+262.20861 CCH  ?
+72.41493 DCN  ?
+217.2386 DCN  ?
+289.64496 DCN  ?
+80.57829 HDO  ?
+87.96281 HDO  ?
+207.11085 HDO  ?
+207.34571 HDO  ?
+210.31065 HDO  ?
+225.89672 HDO  ?
+228.07214 HDO  ?
+232.31268 HDO  ?
+241.56155 HDO  ?
+241.97357 HDO  ?
+255.05026 HDO  ?
+258.22376 HDO  ?
+266.16107 HDO  ?
+272.90754 HOD  ?
+
+72.03931 DCO+  ?
+144.07729 DCO+  ?
+216.11258 DCO+  ?
+288.14386 DCO+  ?
+
+86.24337  SiO  ?
+86.84696 SiO  ?
+
+109.21757 13CN  ?
+108.7802 13CN  ?
+108.42689 13CN  ?
+
+109.17365 HC3N  ?
+100.0764 HC3N  ?
+90.979 HC3N  ?
+81.88148 HC3N  ?
+72.78383 HC3N  ?
+
+86.09395 SO  ?
+99.29987 SO  ?
+109.25222 SO  ?
+
+86.75429 H13CO+  ?
+87.09085 HN13C  ?
+
+88.63185 HCN  ?
+
+113.49097 CN  ?
+113.19128 CN  ?
+86.34016 H13CN  ?
+
+
+72.40909 H2CO  ?
+72.83795 H2CO  ?
+101.33299 H2CO  ?
+
+93.17378 N2H+  ?
+92.49427 13CS  ?
+
+96.41295 C34S  ?