Six Baryons that contain a Charm Quark?

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Homework Statement


Basically I've been asked to draw a isospin vs. charge diagram - not a problem. But the question states that this is a sextet, but when I look at the combinations/look up baryons with charm quarks - there are many more than six! Am I missing some quark combination rules for baryons?


Homework Equations



Q = -1, 0, 1

The Attempt at a Solution


For example what is wrong with the combinations

csb
cds
cdb
cud
cus
ctd
cts
ctb

etc.?


Thanks in advance for the help guys :(
 
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Hang on, am I right in thinking they're:

ddc
udc
uuc
dsc
ssc
usc?
 
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