The solution to SMP#10 involves a list of well-known titles with something in common. That common factor makes them appropriate for this week’s puzzle. The titles have been broken into “doublets” and these doublets have been alphabetized. For example: “Sunday Morning Puzzle Number Ten” would be broken into SU ND AY MO RN IN GP UZ ZL EN UM BE RT EN, and then alphabetized thus: AY BE EN EN GP IN MO ND RN RT SU UM UZ ZL.
Two minor problems, one mitigating circumstance, and one note:
Minor Problem #1: Prior to their being broken into doublets, the original titles were all altered in a certain way so that the opposite is true: These titles are now inappropriate for this week’s puzzle.
Minor Problem #2: In addition to the alteration mentioned in MP#1, two extra doublets have been added to each entry 1 through 15. These extra doublets are not to be used when spelling out the altered titles.
Mitigating Circumstance: The two extra doublets in each entry from 1 through 15 --in that order-- will together spell out an additional eight answers. These answers have the same thing in common that the original titles have --though in a different way.
Note: Either of the extra pair of doublets in each entry may come first when spelling out the eight extra answers.
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AP AR CA IA IS MA ME NA NI RI YE
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AN DI IN NO OB ON RR
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ED ER ON PA RD TS
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EA EW KE MA MA ON ON OW RS SH ST TH
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DI IS ME OL OP SO TR
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DR IC IL KS NW ST UM
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AD CO DE DE HE LY RD WA
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AR EA EE ES HO LA LI NT SA TH TP
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DE EE ES FE FT HE HO NS QU RS WO YA
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ES HE LA LL NE RE RE SS TH TH TI WI
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AP EL ER IO NG NS NT OA OF RI TH TH
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DI ER ET HY NG
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IA ND NT OG RU SO SS
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AD AM BO GA GR HE IN NO TH UT
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AN CA CE CH DI DS ON OU SS
What are the 15 altered titles? What are the 15 original titles? What are the 8 extra answers? What is the common factor?