Dear Azalea,

sorry for the confusing names of the outputs.

I understand that the first regressor is the binary variable indicating the group, and the second and third regressors are the covariables. Then the outputs mean:

10m00 and 100m000: difference between groups
01m00 and 010m000: effect of the (first) covariable
001m000: effect of the second covariable

The other outputs are specific contrasts which may be of no interest here.

Hope this helps,

Joaquim