Answer:
良 RYOU, yo(i) - good
利 RI, ki(ku) - interest, take effect
留 RYUU, RU, to(meru), to(maru) - fasten, hold, stay, settle
礼 REI, RAI - courtesy, salutation, gratitude
呂 RO, RYO, sebone, naga, tomo - backbone
They are the kanji on which the following hiragana are based.
ら Hiragana "Ra"
り Hiragana "Ri"
る Hiragana "Ru"
れ Hiragana "Re"
ろ Hiragana "Ro"