How is a geminated consonant treated in the qalb test?

Qalb, Tashrīʿ and Luzūm Mā Lā Yalzam: Completing the Verbal Ornaments

• Shaddah is always treated as another word
• The written consonant is counted as its ungeminated counterpart
• Shaddah makes qalb impossible
• The entire word is omitted