Ratio retain vs drop = 28 vs 83

Words that retain the 'e' when 'abling':
    ['agreeable',
     'changeable',
     'chargeable',
     'disagreeable',
     'enforceable',
     'exchangeable',
     'foreseeable',
     'interchangeable',
     'knowledgeable',
     'likeable',
     'liveable',
     'loveable',
     'manageable',
     'marriageable',
     'moveable',
     'noticeable',
     'peaceable',
     'pronounceable',
     'rechargeable',
     'replaceable',
     'saleable',
     'salvageable',
     'serviceable',
     'shareable',
     'sizeable',
     'tameable',
     'traceable',
     'useable']

Words that drop the 'e' when 'abling':
    ['Gable',
     'achievable',
     'acquirable',
     'admirable',
     'adorable',
     'advisable',
     'arable',
     'arguable',
     'ascribable',
     'attributable',
     'believable',
     'breathable',
     'capable',
     'comparable',
     'conceivable',
     'configurable',
     'consumable',
     'curable',
     'debatable',
     'definable',
     'deplorable',
     'derivable',
     'describable',
     'desirable',
     'determinable',
     'dispensable',
     'disposable',
     'disputable',
     'disreputable',
     'doable',
     'able',
     'employable',
     'endurable',
     'excitable',
     'excusable',
     'executable',
     'forgivable',
     'imaginable',
     'impassable',
     'improvable',
     'inflatable',
     'liable',
     'likable',
     'livable',
     'lovable',
     'measurable',
     'movable',
     'mutable',
     'notable',
     'observable',
     'palatable',
     'parable',
     'perceivable',
     'pleasurable',
     'practicable',
     'presumable',
     'probable',
     'programmable',
     'provable',
     'purchasable',
     'quotable',
     'realizable',
     'receivable',
     'recognizable',
     'reconcilable',
     'recyclable',
     'releasable',
     'relocatable',
     'removable',
     'reputable',
     'retrievable',
     'reusable',
     'revokable',
     'salable',
     'sharable',
     'sizable',
     'solvable',
     'suitable',
     'tamable',
     'usable',
     'valuable',
     'viable',
     'writable']