Deferred Debits | Midpage367.1810Account 181, Unamortized debt expense.367.1823Account 182.3, Other regulatory assets.367.1830Account 183, Preliminary survey and investigation charges.367.1840Account 184, Clearing accounts.367.1850Account 185, Temporary facilities.367.1860Account 186, Miscellaneous deferred debits.367.1880Account 188, Research, development, or demonstration expenditures.367.1890Account 189, Unamortized loss on reacquired debt.367.1900Account 190, Accumulated deferred income taxes.