b. about 810 50
d. about 870 (Age 60)
b. about 820
d. before 878 (Age 58)
b. about 820 25
b. about 840 30
d. about 889 (Age 49)
b. about 840 20 20
d. yes
b. about 870 30 30
d. 910 (Age 40)
d. about 930
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