Perseverance.
The following may also be appropriate:
471,
475,
476,
477,
478,
479,
480,
481,
482,
484,
486,
488,
491,
494,
498,
501,
502,
503,
525,
537,
550,
552,
553,
556,
557,
558,
559,
560,
572,
581,
582,
588,
604,
611,
613,
658,
662,
706
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