Total study duration will range from 63 to 70 days for Arms 1A, 1B, and 2B, with 10 study visits: 4 intensive pharmacokinetic (PK) sampling visits (at Days 0 to 2, 13 to 15, 42 to 44, and 55 to 57) and 6 other visits at screening and Days 7, 21, 35, and 49, with the final visit between Days 63 and 70. Total study duration for Arm 2A will range from 77 to 84 days, with 12 study visits: 5 intensive PK sampling visits (over Days 0 to 2, 13 to 15, 42 to 44, 55 to 57, and 69 to 71) and 7 other visits at screening and Days 7, 21, 35, 49, and 64, with the final visit between Days 77 and 84. Intensive PK visits will require the participant to be admitted to the clinic for 1 or 2 nights and to have blood collected multiple times. Interim study visits may consist of giving a medical history, undergoing a physical exam and blood collection, and undergoing a pregnancy test for women of reproductive potential. Participants also will be required to keep a diary of the times they took outpatient study drugs, any medications taken other than the study drug, and any symptoms experienced.