The Blessed Buddha once explained: How, Bhikkhus, do the five mental hindrances multiply into ten? Own internal sense-desire is a hindrance. Another's external sense-desire is also a hindrance. Sense-desire is thus twofold: Internal and external! Our own internalill-will is a hindrance. Other's ill-will is a hindrance too... Lethargy is a mental hindrance. Any laziness is also a mental hindrance. Lethargy-and-laziness are therefore a dual mental hindrance. Restlessness is a mental hindrance. Regret & worry are also hindrances. Therefore can restlessness-and-regret be explained as two hindrances. Doubt and uncertainty about any internal condition, are hindrances. Doubt & uncertainty about an external condition, are hindrances too. Thus does doubt-and-uncertainty become like a matched mirrored pair...
