Letter and Symbol Series Questions

• a—ba—bb—ab—a
• Z X _ T R _ N L J _ F D_
• ac — ga — eg — ce —
• H— JH — IJHHI — HH —JH
• m — nm — n — an — a — ma —
• _ _ a a b _ a _ a _ b a
• a b – – b a a – – a b –
• a—bbc—aab—aa—abba—
• r__se__os__ro__er__se
• ca _ bd _ ec _ fd _ ge
• – wi – – w – nt – in – wi –
• ___a__aaaba___ ____ba___ab___
• a e b d_f j g i_k o l n_
• _ b _baaabb _ a _ _ bb _ a _
• —PSRQ—SRQP—RQPS—
• —ONP M — NP MO — P MON—
• bab - b - b - - abb
• W ---- UWW ---- ---- W ---- XUW - --- X ---- W
• m _ p l _ pp l m p _ l m pp _
• a _ aa bb _ _ ab _ b _.