S1U1B3A1R1A1C3H4N1O1I1D2A1L1
22 points
SUBARACHNOIDAL is validvalid
situated under the arachnoid membrane, also SUBARACHNOID
situated under the arachnoid membrane, also SUBARACHNOID
situated under the arachnoid membrane, also SUBARACHNOID
situated under the arachnoid membrane, also SUBARACHNOID