Galaxy Groups M 49 + NGC 4526 + NGC 4535 M 65 + M 66 + NGC 3628 M 81 + M 82 Markarian's Chain M 88 + M 90 + M 91 M 95 + M 96 M 105 + NGC 3384 + NGC 3389 Hickson 44 NGC 3718 + NGC 3729 NGC 4206 + NGC4216 NGC 5363 + NGC 5364 Hickson 68 + NGC 5371 NGC 5985 + NGC 5981 + NGC 5982 Stephan's Quintet Abell 426 Abell 1656 - Coma Cluster