Subsystems rhymes with:
argosystems, biosystems, cablesystems, ecosystems, microsystems', techsystems, ultrasystems, argosystems, biosystems, cablesystems, ecosystems, microsystems', techsystems, ultrasystems
Subsystems sounds like:
scapegoating, sebastian's, sebastianis, subjecting, subsidence, subsiding, subsistence, substance, substances, substituting, substitutions, suffocating, suppositions, suspecting