period were the gradual assimilation of several different consonant clusters into the fricative and later into . There was also the gradual softening of and into and the fricative before front vowels. The velar fricative was also transformed into the corresponding plosive . Contemporary Swedish The period that includes Swedish as it is spoken today is termed nusvenska (lit., "Now-Swedish") in linguistics, and started in the last decades of the 19th century. It saw a democratization of the language with a less formal written form that approached the spoken one. The growth of a public school system also led to the evolution of so-called boksvenska (literally, "book Swedish"), especially among the working classes, where spelling to some extent influenced pronunciation, particularly in official contexts. With the industrialization and urbanization of Sweden well under way by the last decades of the 19th century, a new breed of authors made their mark on Swedish literature. Many scholars, politicians and other public figures had a great influence on the emerging national language, among them prolific authors like the poet Gustaf Fröding, Nobel laureate Selma Lagerlöf, and radical writer and playwright August Strindberg. It was during the 20th century that a common, standardized national language became available to all Swedes. The orthography finally stabilized and became almost completely uniform, with some minor deviations, by the time of the spelling reform of 1906. With the exception of plural forms of verbs and a slightly different syntax, particularly in the written language, the language was the same as the Swedish of today. The plural verb forms appeared decreasingly in formal writing into the 1950s, when their use was removed from all official recommendations. A very significant change in Swedish occurred in the late 1960s, with the so-called du-reformen, "the you-reform". Previously, the proper way to address people of the same or higher social status had been by title and surname. The use of herr ("Mr" or "Sir"), fru ("Mrs" or "Ma'am") or fröken ("Miss") was considered the only acceptable way to begin conversation with strangers of unknown occupation, academic title or military rank. The fact that the listener should preferably be referred to in the third person tended to further complicate spoken communication between members of society. In the early 20th century, an unsuccessful attempt was made to replace the insistence on titles with ni—the standard second person plural pronoun)—analogous to the French vous. (Cf. T-V