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some kinds of unusual animals
ECO stands for Encyclopaedia of Chess Openings. An opening has an ECO code that begins with a letter A-E then a number 00 to 99. For instance the ECO code for the Latvian counter-gambit is C40, while the ECO codes for the Caro-Kann defenses are B10-B19. Unusual openings like the creepy crawly formation are categorized under A00.
A fox is most active during the night and dusk/dawn hours. However, it is not unusual to in rural areas to see foxes out during the daytime, especially during spring after their litters are born.
Chopin composed 26 finished Preludes for solo piano and one was left unfinished. Chopin wrote 24 Preludes for solo piano, Op.28. One in each key corresponding to the circle of 5th's; no doubt, an homage to Bach's "Well Tempered Clavier", a collection of two books containing preludes and fugues in all modulations. Chopin also composed a 25th prelude, Opus45 in C# Minor and a 26th prelude WoO in A-flat Major. The latter being elementary in composition. Recently, a fragment was found of a Chopin prelude in the unusual key of E-flat Minor.
more unusual, most unusual
Unusual is spelled with three u's. That's unusual. What an unusual observation. That's an unusual observation deck.
more unusual, most unusual
more unusual, most unusual
most extraordinary, more extraordinary
"Unusual" is an adjective.
more unusual
Regular Austrian schools start at 745. However there are differences concerning the end of school. If they have six lessons per day, which is quite usual for children at the age of 13 or older, they stay at school until 120 pm. Sometimes they have afternoon-sessions, which last one to two hours. But in general it's rather unusual for Austrian students to stay at school at the later afternoon.